Crossword Genius

They may fly with shrill cries from the ship's cat! (7)

Ross

I believe the answer is:

seamews

I'm a little stuck... Click here to teach me more about this clue!

'they may fly with shrill' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'cries from the ship's cat' is the wordplay.
I cannot quite understand how this works, but
'cries' could be 'mews' (mew is a kind of cry) and 'mews' is present in the answer.
The remaining letters 'sea' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

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